[Reviewed] [Boids] Fix a movement issue after a scene change (#704)

Author: D8H

extensions/reviewed/BoidsMovement.json

@@ -8,9 +8,12 @@
   "name": "BoidsMovement",
   "previewIconUrl": "https://resources.gdevelop-app.com/assets/Icons/Glyphster Pack/Master/SVG/Restaurant/Restaurant_restaurant_seafood_animal_fish.svg",
   "shortDescription": "Simulates flocks movement.",
-  "version": "0.1.5",
-  "description": "Simulates swarms or flocks movement following the separation, alignment, cohesion principles. The flock can be attracted to a location or avoid some obstacles.\n\nThe [Fish School example](https://editor.gdevelop.io/?project=example://fish-school) shows how properties impact on the movement.",
-
+  "version": "0.1.6",
+  "description": [
+    "Simulates swarms or flocks movement following the separation, alignment, cohesion principles. The flock can be attracted to a location or avoid some obstacles.",
+    "",
+    "The [Fish School example](https://editor.gdevelop.io/?project=example://fish-school) shows how properties impact on the movement."
+  ],
   "origin": {
     "identifier": "BoidsMovement",
     "name": "gdevelop-extension-store"
@@ -211,6 +214,7 @@
                 "   * @parameter {gdjs.RuntimeBehavior} behavior",
                 "   */",
                 "  function Boid(behavior) {",
+                "    /** @type {gdjs.RuntimeBehavior} */",
                 "    this.behavior = behavior;",
                 "    this.acceleration = new gdjs.__boidsExtension.Vector(0, 0);",
                 "    this.velocity = new gdjs.__boidsExtension.Vector(gdjs.randomFloatInRange(-1, 1), gdjs.randomFloatInRange(-1, 1));",
@@ -280,7 +284,7 @@
                 "   */",
                 "  Boid.prototype.move = function () {",
                 "    const object = this.behavior.owner;",
-                "    const timeDelta = object.getElapsedTime(runtimeScene) / 1000;",
+                "    const timeDelta = object.getElapsedTime(object.getInstanceContainer()) / 1000;",
                 "    this.acceleration.multiply(timeDelta);",
                 "",
                 "    const previousVelocityX = this.velocity.x;",
@@ -317,7 +321,8 @@
                 "   * @return {Vector} separation direction",
                 "   */",
                 "  Boid.prototype.separate = function () {",
-                "    /** @type {BoidsManager} */",
+                "    const runtimeScene = this.behavior.owner.getInstanceContainer();",
+                "    /** @type {gdjs.__boidsExtension.BoidsManager} */",
                 "    const manager = runtimeScene.__boidsExtension.boidsManager;",
                 "    const separationRadius = this.behavior.SeparationRadius();",
                 "    this.separationDirection.set(0, 0);",
@@ -347,7 +352,8 @@
                 "   * @return {Vector} alignment direction",
                 "   */",
                 "  Boid.prototype.align = function () {",
-                "    /** @type {BoidsManager} */",
+                "    const runtimeScene = this.behavior.owner.getInstanceContainer();",
+                "    /** @type {gdjs.__boidsExtension.BoidsManager} */",
                 "    const manager = runtimeScene.__boidsExtension.boidsManager;",
                 "    const alignmentRadius = this.behavior.AlignmentRadius();",
                 "    this.alignmentDirection.set(0, 0);",
@@ -371,7 +377,8 @@
                 "   * @return {Vector} cohesion direction",
                 "   */",
                 "  Boid.prototype.cohesion = function () {",
-                "    /** @type {BoidsManager} */",
+                "    const runtimeScene = this.behavior.owner.getInstanceContainer();",
+                "    /** @type {gdjs.__boidsExtension.BoidsManager} */",
                 "    const manager = runtimeScene.__boidsExtension.boidsManager;",
                 "    const cohesionRadius = this.behavior.CohesionRadius();",
                 "    let count = 0;",
@@ -412,7 +419,7 @@
                 "   */",
                 "  function BoidsManager() {",
                 "    /**",
-                "     * @type {Map<string, Boid>}",
+                "     * @type {Map<string, gdjs.__boidsExtension.Boid>}",
                 "     */",
                 "    this.boids = new Map();",
                 "    this.boidsRBush = new rbush();",